On polarization of the beam extracted with the bent crystal

Particles scattered off the nuclear target acquire a polarization if the nuclei have a non-zero analyzing power. This effect is enhanced when particles traverse a bent crystal. Such an enhancement under certain assumptions allows one to measure the analyzing power at a level of 10−4 at the square of transfer momentum |t|<10−5 (GeV/c)2. If it happens also that the analyzing power is big enough, then one can get a beam polarization of more than 50% after extraction of the primary beam with the bent crystal.